0 votes 0 votes Mathematically, an attribute A for an entity whose value set is V can be defined as a function from E to the power set P(V) of V: A:E->P(V) attribute A is single valued multi valued both a&b composite valued Sanju Rakonde asked Feb 2, 2017 Sanju Rakonde 188 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.